Process of making glutinous compounds.



No. 671,228. Patented Apr. 2, l90l. W. PAINTER.

PROCESS OF MAKING GLUTINOUS COMPOUNDS.

(Application: fl1ed Apr. 22 189B. Renewed Sept. 17, 1900) I (No Model.)

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Ainnr Oriana llniirnn STATES WILLIAM PAINTER, OF BALTIMORE, MARYLAND, ASSIGNOR TO THE ORO\VN CORK AND SEAL COMPANY, OF SAME PLACE.

PROCESS OF MAKING GLUTINOUS COMPOUNDS.

SPECIFICATION forming part of Letters Patent 671,228, dated April 2, 1901.

Application filed April 22, 1898. Renewed September 17, 1900. serial No. 30,3 11. No specimens.)

To aZZ whom it may concern: atmosphere after the product is completed. Be it known that I, WILLIAM PAINTER, a Thus by regulating the amount of glycerin or citizen of the United States, residing at Balwater of constitution retained in the comtimore, Maryland, have invented certain new plcted product a certain permanence is given 5 and useful Improvements in Processes of to it as to elasticity and pliability. In the Making Glutinous Compounds, of which the application of heat, therefm'e, I find that it is following is a specification. necessary for the best results to exercise My invention relates to the manufacture of care in order to properly regulate theamount compounds in which gluten and a body maof glycerin or water allowed to remain in the 1O terial with or Without glycerin are the prin completed product. A sufficient quantity of cipal elements. Such compositions I have the glycerin or of the water of constitution, 0r discovered possess the quality of insolubility both, must be permanently retained in the in water and have flexibility to the desired compound in order to impart to it such pliadegrce to render the composition suitable, for bility or flexibility as may be essential to fab- 15 instance, as a waterproof coating for fabrics rics to which it may be applied or for meeting or for other uses where such qualities as inthe requirements of other uses to which the solubility and flexibility are called for. compound may be put and to prevent dete- The compoundisformed byintimatelymix rioration in these respects from age. This ing the gluten and glycerin together, so as to step of using heat in my process I refer to in 2O effect the solution of the plastic gluten in the my applications for Letters Patent of the glycerin, heat being sometimes used in the United States, filed January 14, 1898, Serial process in order to efiect that desired change Nos. 666,662, 666,663,and 666,664cthat is,the in the nature of the gluten, which makes it subjection ofthe gluten or the compounds more repellent to liquids. before, during, or after admixture to a tem- 25 In forming these compounds it is to be unperature higher than that of the atmosphere derstood that the gluten is used in the wet, for the indurating effect on the gluten. In plastic state which it assumes as extracted the application of these higher temperatures from cereal substances containing it and that to thevarious compounds of gluten, glycerin, in this state it containsa proportion of water and a body material, and particularly those 0 which may be regarded as its water of consticontaining glycerin as one of the component tution, the entire loss of which would render elements, it is advantageous, as above indiit hard and inelastic unless wholly or in part cated, to provide a way by which the induratreplaced by the glycerin, and that in the proing action may go on to the desired point withcesses herein referred to more or less of this out causing the loss of any of the glycerin or 35 Water of constitution may be retained. It is water of constitution through the volatilizaalso to be understood that owing to the Welltion of either, and for this purpose I subject known affinity of glycerin for water or its by the compound to heat while excluding the groscopic nature whatever of the water of outside air therefrom. The amount of water constitution of the gluten may remain in the of constitution of the wet gluten allowed to 0 completed product is prevented from subseremain in the compound before subjecting it quent evaporation while exposed to the atmosto the indurating action of heat under excluphere by this affinity of glycerin for it, the sion from the atmosphere is obtained by maglycerin itself being less volatile than the wanipulatiug the ingredients underasufficiently ter which it may hold in combination. I have high temperature while exposed to the atmos- 45 also found that in cases where the water of phere to evaporate the water toadesired point, constitution of the plastic gluten is wholly while keeping the temperature below that at replaced by the glycerin in the processes of which the glycerin would also evaporate. combining theseveral ingredients if a sufii- The drawings show the means by which the cientproportion ofglycerinis thus substituted indurating of the gluten is effected as ex- I00 50 for the water its affinity for water will cause eluded from the air.

it to absorb more or less of moisture from the Figure 1 is a vertical sectional View, while Fig. 2 is a transverse sectional view, of an air-tight digester.

The apparatus comprises an air-tight digester having a body B, a cover 0, and a central bolt D, with its lower end screwed into the bottom of the digester and its headed upper end bearing upon a Washer E on the outer face of the cover.

In carrying out my method the ingredients, including the gluten and glycerin or the gluten, glycerin, and body material, are intimately mixed together, so that the complete solution of the gluten in the glycerin or a complete incorporation of the three ingredients is effected undera sutficiently high temperature, so that the desired amount of the Water of constitution is evaporated away. The material, if in sheet form, is then placed in this air-tight digester, preferablyin the form of a loose roll, and then the digester is placed in an oven or subjected to heat in any desired way. By this method of indurating the material the outside airis excluded from contact with the material and the loss of the glycerin or water of constitution through volatilization under the action of the heatis prevented.

Instead of placing the material in the digester in the form of a loose roll it may sometimes be desirable to roll it tightly in order to place the same under some mechanical pressure, in which case a thin sheet of metal a, may be rolled up tightly with and between "the folds of the material in order to prevent the parts of the roll from sticking together, or it may be clamped in form of sheets between plates in a portable press or com pressed in molds of any desired form and the whole placed in the digester.

I claim 1. The herein-described process consisting in subjecting glutinous compounds to heat during admixture to regulate the amount of water to be retained therein and subsequently subjecting them to heat while excluding the air therefrom, substantially as described.

2. The herein-described process consisting in subjecting compounds, of which gluten in the plastic state and glycerin are component elements, to heat while excluding the air therefrom, substantially as described.

3. The herein-described process of treating glutinous compounds consisting in subjecting the same to pressure and heat while excluding the air therefrom.

In testimony whereof I afiix my signature in presence of two witnesses.

WILLIAM PAINTER.

Witnesses:

J OHN T. HAWKINS, W. H. WHEELER. 

